@steve.dower : the vc_redist packages doesn't list the files it installs, I'm not sure of the names of the files, but who cares, please look at my screenshot of dependency walker, it shows how different versions of Python win32 releases that I downloaded on python.org (3.5.0, 3.4.3,3.3.x) used different vc-runtime settings, and how some of them don't work on Vista.

@Wolfgang Langner : "this update doesn't apply to you system" :-)

So what I'm saying is : please be careful with the compiler options if you want you executables to be compatible with vista/7/8/10